<mat-toolbar color="primary">
        
        <button mat-stroked-button (click)="openSidebar()"><mat-icon>wrap_text</mat-icon></button>
        <button mat-stroked-button><mat-icon  svgIcon="avatars:svg-1"></mat-icon></button>

        企业协作平台
        <span class="fill-remaining-space"></span>
        <mat-slide-toggle (change)="onChange($event.checked)">Slide me!</mat-slide-toggle>
</mat-toolbar>
